Place the rolled oats in a high-speed blender and pulse until they reach a fine, flour-like consistency.
Add the egg whites, vanilla protein powder, ground cinnamon, sea salt, and vanilla extract to the blender.
Blend on high for 30 seconds until the batter is smooth and slightly frothy.
Slice the half banana into 1/4-inch thick rounds.
Heat the ghee and maple syrup in a large non-stick skillet over medium heat until the mixture begins to bubble.
Place the banana slices in the skillet and cook for 2 minutes per side until deeply golden and caramelized, then remove and set aside.
Wipe the skillet if necessary, then pour the pancake batter into the pan to form three medium-sized pancakes.
Cook for 3-4 minutes until bubbles form on the surface, then flip and cook for another 2 minutes until cooked through.
Plate the pancakes and top with the warm caramelized banana slices immediately.